How to ensure that ASP.NET Web API returns only JSON data ?

Posted by Rajnilari2015 on 6/22/2016 | Category: ASP.NET Web API Interview questions | Views: 26136 | Points: 40

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config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/json"));
config.Formatters.XMLFormatter.SupportedMediaTypes.Add (new MediaTypeHeaderValue("text/html") );
config.Formatters.JsonFormatter.SupportedMediaTypes.Add (new MediaTypeHeaderValue("text/xml") );
config.Formatters.XMLFormatter.SupportedMediaTypes.Add (new MediaTypeHeaderValue("text/xml") );
All Above

In the in WebApiConfig.cs class in MVC Web API project we need to add

config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/json"));

To ensure that the data return only JSON. Asp.net web API will serialize the returning object to JSON and as the application/json is added in the header so the browser will understand that the WebAPI is returning only JSON result.